Improvement in magnetic water-gages



G.,W. SMITH & O. F. HBNIS.

MAGNETIC WATER GAGE.

No. 44,118. I Patented Sept. 6, 1864.

mam \V UNITED STATES PATENT OFFICE.

GEORGE W. SMITH AND CHARLES F. HENIS, OF CINCINNATI, OHIQ.

llVlPROVEMENT- lN MAGNETIC WATER-GAGES.

Spccificationforming partof-Letters Patent No. 14,l [8, datedSeptember'fi, 1864.

To all whom it may concern:

Be it known that we, GEORGE W. SMITH and CHARLES F. HENIS, ofCincinnati, in the county of Hamilton and State of Ohio, have in venteda new and Improved Magnetic Water- Gage; and we do hereby declare thatthe following is a full, clear, and exact description thereof, whichwill enable others skilled in the artto make and use the same, referencebeing bad to the accompanying drawings, forming part of thisspecification, in ,.which-' Figure 1 represents asectional front elevation of our invention. Fig. 2 is a transverse vertical section of thesame.

Similarletters of referenceindicatelike parts.

This invention consists in the employment or use of a vertically-movin gmagnet in eombination with a vertical tube and with a revolvingindex-hand and dial and with a float in such a manner that by the actionof the float on the magnet the position the water has in the boiler isindicated with perfect accuracy, the index-hand being caused to'tollowthe motions of the magnet.

- The invention consists, also, in the use of a woodenfloatcoatedby-electro-magnetic process with copper in such a manner thatthe wood is protected against the destroying agency of the water orsteam, and the collapsing of the float is obviated.

A represents a float made of wood and covered by electromagnetic processwith a thin shell of copper to protect the wood against the action ofwater and steam. This float is which extends up into the tube G, andbear on its upper end the magnet D.

The tube 0 is secured in the top of a steamboiler in a vertical positionby means of a nut, a, which screws in the lower end of the tube anddraws the same down tight against the outer surface of the boiler-plate.

Suitable packing prevents the escape of steam.

The nut a forms the guide for the rod B, which is flat or otherwise soformed that it will not turn in the socket of the nut, and its upper endis secured to the U-shapedmagnet by means of a nut, b, or in any othersuitable manner.

The upper end of the tube 0 is firmly closed, and the magnet moves upanddown thereon with perfect freedom. Said tube of course must be madeof brass, copper, or other material which has no magneticproperties andsufficiently strong to withstand the pressure of the steam. Secured toits upper end is the case E, which forms the. bearings for the arbor ofthe index-hand O. This index-hand is made or steel or other suitablematerial having magnetic properties, or its points may be alsomagnetized to increase its attraction to the magnet D, anditmoves over adial, (1, which is fastened in thecase 1 Suitable marks on the dialindicate the height of the water in the boiler, and the engineer is thusable to tell at a glance at any moment the exact position of the water.

This gage can be readily appliedto boilers of any description, and byplacing the rod carrying the float in a vertical position, the condensedwater is free to run back into the boiler, and the magnet is not liableto be blocked up by dirt or impuritiesaccumulatiu g in said tube, and,furthermore, by unsc'rewin g thenut a free access can behadtojthemagnetand to the tube 0 for the purpose of cleansing the same vwhenever itshould bedesirable; furthermore,

the rod B is perfectly guided by the tube 0, which may be made to extenddown into the boiler, if desired, and our gage can be used on secured tothe lower end of a vertical rod, 13,

marine boilers and locomotives, as well as on stationary engines.

We claim as new and desire to secure by Letters Patent- The verticaltube 0 and magnet D, in combination with the fioatA and revolving indexa, constructed and operated as and for the purpose specified. I

GEO. W. SMITH. CHE. F HENIS. Witnesses:

W. CHEASEY, J A0013 LowRY.

